2nd Pennsylvania Provisional Heavy Artillery Regiment

1864
April 20	The regiment was organized from surplus men of the 2nd Pennsylvania Heavy Artillery Regiment, which had grown through enlistments to 3,300 men, well over its legal limit. It was commanded by Colonel Thomas Wilhelm, Lieutenant Colonel Benjamin Barney and Major Matthew Marsland.
April	Attached to Provisional Brigade, 1st Division, 9th Army Corps, Army Potomac
May 5-7	Campaign from the Rapidan to the James
June 1-2	Battle of the Wilderness
May 8-21	Battle of Spottsylvania Court House
May 23-26	North Anna River
May 26-28	Line of the Pamunkey
May 28-31	Totopotomoy
June 1-12	Battle of Cold Harbor Captain Samuel H. Davis was killed
June	Assigned to 3rd Brigade, 1st Division, 9th Corps
June 15-18	Before Petersburg Lieutenant Thomas Shapiro was killed and Colonel Wilhelm wounded
June 18	Siege of Petersburg. Assigned to 2nd Brigade, 1st Division, 9th Corps
July 7	Lieutenant Daniel Dublin died of disease at Finley Hospital, D.C.
July 30	Mine Explosion, Petersburg From the monument at The Crater: Went into action July 30, 1864, 780 men – answered roll call. After battle 286 men; Lost killed and wounded 494 men, including 8 officers.
August 20	The regiment disbanded
September 5	Rejoined the Second Pennsylvania Heavy Artillery Regiment, having lost about one thousand casualties and reduced to a strength of less than 400 men.